# Android Clean Architecture (Android)

> Android의 Clean Architecture: 레이어, Use Case, Repository 패턴 및 SOLID 원칙

- 21 면접 질문
- Senior
- [면접 질문: Android](https://sharpskill.dev/ko/technologies/android/interview-questions.md)

## 1. Clean Architecture의 3가지 주요 레이어는 무엇인가요?

**답변**

Clean Architecture는 3개의 레이어로 구성됩니다: Presentation(UI, ViewModels), Domain(Use Cases, 비즈니스 엔티티), Data(repositories, data sources). 각 레이어는 고유한 책임을 가지며 내부 레이어에만 의존합니다.

## 2. Clean Architecture에서 Use Case란 무엇인가요?

**답변**

Use Case(또는 Interactor)는 애플리케이션의 단일 비즈니스 액션을 캡슐화하는 클래스입니다. 유스케이스에 특화된 비즈니스 로직을 포함하고 Repository 호출을 조율합니다. 예: LoginUseCase, GetUserProfileUseCase.

## 3. Repository 패턴이란 무엇인가요?

**답변**

Repository는 데이터 접근을 위한 인터페이스를 제공하는 추상화로, 실제 소스(API, 로컬 DB, 캐시)를 숨깁니다. 다양한 data sources를 조정하고 Domain 엔티티를 반환합니다. 데이터 접근 로직을 중앙화합니다.

## 18개 추가 질문 이용 가능

- Clean Architecture에서 Data Sources의 유형은 무엇인가요?
- Domain Models와 Data Models의 차이점은 무엇인가요?

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## 기타 Android 면접 주제

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- [Android CI/CD and Release](https://sharpskill.dev/ko/technologies/android/interview-questions/android-cicd-release.md): 15개 질문, Senior
- [Android UX and Form Factors](https://sharpskill.dev/ko/technologies/android/interview-questions/android-ux-form-factors.md): 18개 질문, Senior
- [Android Testing Advanced](https://sharpskill.dev/ko/technologies/android/interview-questions/android-testing-advanced.md): 18개 질문, Senior

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